.btn{
    width: 750rpx;
    height: 120rpx;
    margin-top: 66rpx;
    display: flex;
    justify-content: center;
    align-items: center;
    .btn-cent{
        display: flex;
        justify-content: center;
        align-items: center;
        width: 600rpx;
        height: 100%;
        background-color: #909399;
        color: white;
        border-radius: 36rpx;
    }
}